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Articles by C.E. Chinweze
Total Records ( 2 ) for C.E. Chinweze
  I.C. Okoli , C.O. Okparaocha , C.E. Chinweze and A.B.I. Udedibie
  Several processing methods have been used to reduce the cyanogenic glycoside content of cassava used in animal feeding, resulting in wide variations in the physicochemical and hydrogen cyanide (HCN) contents of available processed cassava products. This study evaluated the physicochemical and HCN contents of three differently processed cassava products used for feeding poultry in Nigeria. The three products were designated Abi (AB), Nali (NB) and Local (LB) brands. They were analyzed for their physical properties Bulk Density (BD), Water Holding Capacity (WHC) and specific gravity (SP); chemical properties Moisture Content (MC), Crude Protein (CP), Crude Fiber (CF), Ether Extract (EE) Ash Content (AC), Nitrogen Free Extract (NFE) and Metabolizable Energy (ME) and hydrogen cyanide contents. The LB and AB had significantly higher (p<0.05) WHC than NB while LB had the lowest BD and SG which were again significantly different from those of AB and NB (p<0.05), indicating significantly higher insoluble Non Starch Polysaccharides (NSP) or indigestible fiber in LB. The AB and LB were similar in their CF, AC and NFE values (p>0.05) which were significantly different from the NB values (p<0.05). The significantly higher CF (5.5%) in NB is chiefly soluble NSP as shown by the low WHC of the brand. The NB recorded very high HCN value (100-200 ppm), while the LB and AB had 5-15 ppm, indicating value in poultry feeding. Comparatively, NB, which is an oven toasted product, recorded superior physicochemical values, while the AB and LB gave more desirable HCN values. The Nali and Abi processing methods could be combined to produce a superior cassava product for the feeding of poultry in Nigeria.
  I.C. Okoli , D.A. Alaehie , E.C. Akano , U.E. Ogundu , C.G. Okoli , C.T. Akujobi , I.D. Onyicha and C.E. Chinweze
  Research on the concentrations of aerial pollutant gases in tropical livestock buildings is needed in order to establish baselines for exposure limits in context of animal and human welfare in the tropical environments. The concentrations of aerial ammonia, nitrous oxide, methane, carbon monoxide, hydrogen sulfide and sulfur dioxide in selected pig pens in the Owerri area of Imo State, Nigeria were measured during the month of August 2002. These were thereafter correlated with pig building measurements in order to determine the possible influence of building measurements on concentration of the gases. Overall mean aerial concentrations of carbon monoxide CO (2.7±0.34 ppm) was the highest mean value recorded and was followed by the 1.4±0.0 and 0.07±0.14 ppm recorded for flammable gas (methane) and hydrogen sulfide, respectively while the 0.0±0.0 ppm recorded for ammonia was lowest. The average length of the buildings was 64.20, while 21.40, 11.60 and 4.35 ft. were obtained for width, height and sidewalls, respectively. In all pens, the simple linear regression was not significant (p<0.05), with the coefficient of determination ranging from 0.001 (SO2) to 0.364 (CO). For the different aerial pollutant gases, the best linear predictor was for CO using height of building followed by SO2 using height and so on based on the R2 values. Even though this study returned low levels of gases for the area during the month of August, there is the need to extend the study to other periods of the year especially the dry season months in other to further elucidate the effects of inclement whether on gas concentrations in pig pens.
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